Production of dispersable polyethylene waxes

    公开(公告)号:GB929643A

    公开(公告)日:1963-06-26

    申请号:GB4099261

    申请日:1961-11-16

    Applicant: BASF AG

    Abstract: Waxy ethylene polymers dispersable in water are produced by polymerizing ethylene at 50 DEG -250 DEG C. and 100-2,000 atmospheres in p 20-80% of an organic solvent containing up to 20% of water in the presence of 0,1-20% of an at least 50% or wholly neutralized unsaturated polymerizable carboxylic or sulphonic acid and free radical forming calalysts. The acids may be acrylic, methacrylic, crotonic, maleic, fumaric or vinylsulphonic. An alkali, e.g. Na or K, hydroxide or ammonium hydroxide may be used for neutralization as well as organic ammonium compounds in which the H of the NH4 may be substituted by alkyl, alkoxy, aryl or aralkyl radicals. Amides or anhydrides of the above acids may be used together with the acids and their salts. The catalysts, e.g. 0,001-5%, may be organic or inorganic peroxides, e.g. benzoyl, a per salt, peroxyesters, azo compounds or redox systems or the radicals may be produced by high-energy radiation. Regulators, e.g. allyl acetate, may be used. The solvent may be alcohols, ketones, esters, ethers, lactones, and/or hydrocarbons. Dispersants may be used during polymerization which may be carried out in autoclaves or continuously in flow tubes.

    Improvements in hectograph compositions

    公开(公告)号:GB902757A

    公开(公告)日:1962-08-09

    申请号:GB717160

    申请日:1960-03-01

    Applicant: BASF AG

    Abstract: A salt-like dyestuff comprises a cation of a basic dyestuff of p the di- or tri-arylmethane series combined with an anion of a phthalocyanine sulphonic acid. The dyestuffs may be prepared by reacting (1) the basic dyestuffs Auramine, Malachite green, Crystal violet, Methyl violet, Victoria pure blue or Rhodamine B or their carbinol bases with (2) a phthalocyanine sulphonic acid such as a mono-, di-, tri or tetrasulphonic acid of a metal-free or metal-containing phthalocyanine or a reaction product of such a sulphonic acid with an amount of alcohol insufficient for complete esterification or a salt of one of said phthalocyanine compounds. In the preparation of the dyestuff an acid binding material such as sodium carbonate or a tertiary amine may be present in the reaction mixture. In an example, Crystal violet dissolved in chloroform is added to a solution of phthalocyanine trisulphonic acid (sodium salt) in water and the mixture refluxed.

Patent Agency Ranking